Sanding Pad: 3 inch / 76 mmFree Speed (r.p.m): 15,000Overall Length: 6.6 inch / 160 mmAir Inlet (PT): 1/4″Air Hose (I.D.): 3/8″Air Consumption: 6 cfm / 171 L/minNet Weight: 1.55 Lbs / 0.70 Kgs